ESP8266 Community Forum

Posted: **Tue Aug 28, 2018 2:13 am**

Dear all,

I need help on a small project I'm working on at the moment. In our house the shadings are controlled via a homepage of a local network which goes on my nerve because I always have to switch between WiFi's on my phone. So I thought I could learn my NodeMCU (Arduino IDE) to controll the shadings.

So far I can access the network and also connect to the homepage but I'm stuck at virtually pressing the buttons (which are actually images as far as I know).

I accessed the source code of the hompage. I think what I would need to do is to execute the highlighted "set_request" command:

SourceCode.png

Does anybody know an easy solution for my problem?

Thank you so much and kind regards,
Alex

P.S.: The code I use to access the homepage.

Code: Select all

#include <WiFiClient.h>

#include <ESP8266WiFi.h>


const char *ssid =  "exampleNetwork";     // replace with your wifi ssid and wpa2 key
const char *pass =  "PASSWORD";

IPAddress server(192,168,82,10);

WiFiClient client;
 
void setup() 
{
       Serial.begin(9600);
       delay(10);
               
       Serial.println("Connecting to ");
       Serial.println(ssid); 
 
       WiFi.begin(ssid, pass); 
       while (WiFi.status() != WL_CONNECTED) 
          {
            delay(500);
            Serial.print(".");
          }
      Serial.println("");
      Serial.println("WiFi connected"); 
      Serial.println('\n');
      Serial.println("Connection established!");  
      Serial.print("IP address:\t");
      Serial.println(WiFi.localIP());         // Send 
      while(!client.connect(server, 80)){
        delay(500);
        Serial.print(".");
      }
  Serial.println();
  Serial.println("Connected");
}
 
void loop() 
{      
  
}

Posted: **Wed Aug 29, 2018 5:53 am**

looks like the blinds controller open an extra WiFi (are not connected to his home WiFi).
He most likely wants to build a small esp8266 powered http client that connects with the blinds WiFi and pushes the virtual button.
Would be less effort to look at the user manual of the controller to find how to get them into the domestic WiFi...

Posted: **Wed Aug 29, 2018 8:18 am**

Hi!

Just as schufti said, it's an extra WiFi. The problem is, I'm only a user of this system which is shared with other people. So I don't have access to any manual and can also not get in into my personal WiFi.

I will try the suggestion of philbowls and try to learn more about javascript and HTML.
Thank you very much for your help!

Posted: **Thu Aug 30, 2018 2:31 am**

Hi again,

I just wanted to tell you that I finally got it working :-)

I will birefly summarize how I did, maye that's useful for somebody else.

I used fiddler to get the signal which is emitted from the pressed button. (Thanks PhilipBowles!) In my case, command.php is called when you press the button, and for instance "name=blind_1_up" is posted (In Fiddler you find it under Inspectors -> TextView). The content type can be found at Inspectors -> RAW.

Then this can easily be done by the NodeMCU:

Code: Select all

#include <ESP8266HTTPClient.h>
#include <ESP8266WiFi.h>


const char *ssid =  "SSID";     // replace with your wifi ssid and wpa2 key
const char *pass =  "******";

IPAddress server(192,168,82,10);
int port = 80;
WiFiClient client;

void setup() {
  // put your setup code here, to run once:
       Serial.begin(115200);
       delay(10);
       WiFi.mode(WIFI_STA);
       
       Serial.println("Connecting to ");
       Serial.println(ssid); 
 
       WiFi.begin(ssid, pass); 
       while (WiFi.status() != WL_CONNECTED) 
          {
            delay(500);
            Serial.print(".");
          }
      Serial.println("");
      Serial.println("WiFi connected"); 
      Serial.println('\n');
      Serial.println("Connection established!");  
      Serial.print("IP address:\t");
      Serial.println(WiFi.localIP());         // Send 
   
  Serial.println();
  Serial.println("Connected");

}

void loop() {
  if (Serial.available()==1){
    Serial.read();
    HTTPClient http;
    http.begin("http://192.168.82.10/command.php");
    String postData = "name=blind_1_up" ;
    
    http.addHeader("Content-Type", "application/x-www-form-urlencoded");    //Specify content-type header
   
    int httpCode = http.POST(postData);   //Send the request
    String payload = http.getString();    //Get the response payload
   
    Serial.println(httpCode);   //Print HTTP return code
    Serial.println(payload);    //Print request response payload
   
    http.end();  //Close connection
    
    delay(5000);  //Post Data at every 5 seconds
  }
  

}

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